While I prefer the decor and lobby at BC, I have stayed twice where I've been stuck with one of those standing balconies. I much prefer the full balcony at YC. The walk between the two is very short so I'd pick YC.
I think you will enjoy the YC. Also, don't worry about that "bit further" stagger back to the YC. The distance between Epcot and YC vs's BC in my opinion is irrelevant.
The distance between the two resorts is about a 1-2 minute walk and perhaps 100 yards at best. And if you take the boat at all the YC is actually a minute or two closer.
I think you made a good choice. I've stayed at both and like both, but IMO for an adult trip the YC is a better choice because the lobby is quieter and because of the full balconies. Although to me they are basically the same resort and if I can find a discount at one of them (and not the other) I will gladly switch and save the $$$.